DA4250 4*250W 4 Channels Digital Amplifier

Name: DA4250 4*250W 4 Channels Digital Amplifier
Brand: Guangzhou DSPPA Audio Co., Ltd.

Features

● Multi-channel: 4-channel or 2-channel;
● 5-unit LED for status;
● Advanced active PFC (power factor correction);
● Efficient switching power supply;
● Efficient CLASS D amplifier;
● Support DC 24V power supply;
● Adjust fan speed with temperature;
● Equipped with voltage limit circuit;
● All-protected circuit design;
● Support real-time switch of 70/100V output;
● Input sensitivity: 775mVRMS;
● Both line input and output interfaces adopt HT-3.81 phoenix;
● 100VRMS prior line input;
● Balanced prior line input;
● Balanced line input;
● 7.62-4P fence output socket with cover is adopted for power output.

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Introduction
Specification
Connection

This is a Class D digital amplifier designed for commercial and industrial public address applications. Rack mount design in 1U type and rated power is 4*250W.Both balanced and unbalanced line inputs are available for each channel. Balanced line output feeds to another power amplifier as well as secures the signal transmission is less noise and longer distance. 70V, 100V speaker outputs are convenient for installation when selection different speaker matching. Complete protection includes clip, short circuit, high temp and overload. With indications for power, signal, clip, protection and temperature. This product can be called 4 channel mixer amplifier.

DA4250 4*250W 4 Channels Digital Amplifier

Model	DA2125	DA2250	DA2500	DA4060	DA4125	DA4250
Number of channels	2	2	2	4	4	4
Rated output power of each channel	120W	250W	500W	60W	120W	250W
Input sensitivity	775mVRMS（0dBV/ all balanced input) 100VRMS (100V unbalanced input)
SNR (signal-to-noise ratio)	>80dB (100VRMS output)
Input impedance	60K ohms (balanced)20K ohms (balanced priority) 100K ohms (100V unbalanced)
Channel separation	>70dB(1KHz)
Frequency response	80Hz-15kHz (±3dB normal operating conditions)
THD (total harmonic distortion)	<0.3 % (1kHz normal operating conditions)
Up speed	>29V/us
Priority threshold	>10mVp (prior balanced line input) >1000mVp (prior 100VRMS line input)
Indicators	“Protection”,“Limit”,“Voltage limit”,“Signal”,“70V gear”
Protection	Power-on, high temperature, DC, short circuit
Power supply	AC220V/50Hz DC24V (rated output power -3dB)
Overall dimensions (mm)	（L×W×H）552×510×105
Machine dimension (mm)	（L×W×H）483×435×44 (not including machine legs)
Machine legs	Four 6.5mm high soft plastic machine legs, can be removed as needed
Power consumption (AC220V)	339W	610W	1270W	347.6W	653W	1240W
Power consumption (DC24V)	206.4W	350.4W	720W	223.2W	398.4W	708W
Static power consumption (AC220V)	38W	38W	42W	57.5W	63.5W	57W
Static power consumption (DC24V)	38.4W	38.4W	43.2W	60W	62.4W	57.6W
Gross weight (kg)	7.4	7.4	7.4	8	8	8
Net weight (kg)	6.4	6.4	6.4	7	7	7

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